Hello, when I use the following command in Raspberry Pi 4 model B, I am getting only 8 fps for 1080p resolution.
*ffmpeg -use_wallclock_as_timestamps 1 -t 60 -i /dev/video0 -c:v h264_v4l2m2m -b:v 8M -maxrate 2M -vsync 2 -bufsize 4M -r 30 -s hd1080 -pix_fmt yuv420p -g 30 -qmin 20 -qmax 50 output_1080p.mp4* And when I use the same command, but remove -pix_fmt yuv420p, the output video is 27 fps. *ffmpeg -use_wallclock_as_timestamps 1 -t 60 -i /dev/video0 -c:v h264_v4l2m2m -b:v 8M -maxrate 2M -vsync 2 -bufsize 4M -r 30 -s hd1080 -g 30 -qmin 20 -qmax 50 output1_1080p.mp4* Why does the fps reduce when -pix_fmt yuv420p is used in the ffmpeg command? Both the output videos have pixel format of YUV420, but when I use '-pix_fmt yuv420p' in command, why does it reduce the fps ? What are the default settings to tune the Encoding ? _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
